A simple CyaSSL-based HMAC-MD5 implementation. Licensed under GPL v2.
Dependents: RFrec_full RFtrans_full
The output will be base64-encoded, with trailing "==", like this:
j62o/jZsAZD9i9m+32lIuQ==
Example
#include "mbed.h" #include "hmac_md5.h" Serial pc(USBTX, USBRX); // tx, rx void main(void) { const char * key = "MySecretKey"; const char * text = "message to be signed"; char output[26]; HMAC_MD5(key, text, output); printf("result = %s\n", output); while(true){} }
coding.c@0:83f3dcfa5c8f, 2013-02-06 (annotated)
- Committer:
- igrokhotkov
- Date:
- Wed Feb 06 20:35:03 2013 +0000
- Revision:
- 0:83f3dcfa5c8f
initial revision
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
igrokhotkov | 0:83f3dcfa5c8f | 1 | /* coding.c |
igrokhotkov | 0:83f3dcfa5c8f | 2 | * |
igrokhotkov | 0:83f3dcfa5c8f | 3 | * Copyright (C) 2006-2012 Sawtooth Consulting Ltd. |
igrokhotkov | 0:83f3dcfa5c8f | 4 | * |
igrokhotkov | 0:83f3dcfa5c8f | 5 | * This file is part of CyaSSL. |
igrokhotkov | 0:83f3dcfa5c8f | 6 | * |
igrokhotkov | 0:83f3dcfa5c8f | 7 | * CyaSSL is free software; you can redistribute it and/or modify |
igrokhotkov | 0:83f3dcfa5c8f | 8 | * it under the terms of the GNU General Public License as published by |
igrokhotkov | 0:83f3dcfa5c8f | 9 | * the Free Software Foundation; either version 2 of the License, or |
igrokhotkov | 0:83f3dcfa5c8f | 10 | * (at your option) any later version. |
igrokhotkov | 0:83f3dcfa5c8f | 11 | * |
igrokhotkov | 0:83f3dcfa5c8f | 12 | * CyaSSL is distributed in the hope that it will be useful, |
igrokhotkov | 0:83f3dcfa5c8f | 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
igrokhotkov | 0:83f3dcfa5c8f | 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
igrokhotkov | 0:83f3dcfa5c8f | 15 | * GNU General Public License for more details. |
igrokhotkov | 0:83f3dcfa5c8f | 16 | * |
igrokhotkov | 0:83f3dcfa5c8f | 17 | * You should have received a copy of the GNU General Public License |
igrokhotkov | 0:83f3dcfa5c8f | 18 | * along with this program; if not, write to the Free Software |
igrokhotkov | 0:83f3dcfa5c8f | 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
igrokhotkov | 0:83f3dcfa5c8f | 20 | */ |
igrokhotkov | 0:83f3dcfa5c8f | 21 | |
igrokhotkov | 0:83f3dcfa5c8f | 22 | #ifdef HAVE_CONFIG_H |
igrokhotkov | 0:83f3dcfa5c8f | 23 | #include <config.h> |
igrokhotkov | 0:83f3dcfa5c8f | 24 | #endif |
igrokhotkov | 0:83f3dcfa5c8f | 25 | |
igrokhotkov | 0:83f3dcfa5c8f | 26 | #include "coding.h" |
igrokhotkov | 0:83f3dcfa5c8f | 27 | #include "error.h" |
igrokhotkov | 0:83f3dcfa5c8f | 28 | //#include "logging.h" |
igrokhotkov | 0:83f3dcfa5c8f | 29 | |
igrokhotkov | 0:83f3dcfa5c8f | 30 | |
igrokhotkov | 0:83f3dcfa5c8f | 31 | enum { |
igrokhotkov | 0:83f3dcfa5c8f | 32 | BAD = 0xFF, /* invalid encoding */ |
igrokhotkov | 0:83f3dcfa5c8f | 33 | PAD = '=', |
igrokhotkov | 0:83f3dcfa5c8f | 34 | PEM_LINE_SZ = 64 |
igrokhotkov | 0:83f3dcfa5c8f | 35 | }; |
igrokhotkov | 0:83f3dcfa5c8f | 36 | |
igrokhotkov | 0:83f3dcfa5c8f | 37 | |
igrokhotkov | 0:83f3dcfa5c8f | 38 | static |
igrokhotkov | 0:83f3dcfa5c8f | 39 | const byte base64Decode[] = { 62, BAD, BAD, BAD, 63, /* + starts at 0x2B */ |
igrokhotkov | 0:83f3dcfa5c8f | 40 | 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, |
igrokhotkov | 0:83f3dcfa5c8f | 41 | BAD, BAD, BAD, BAD, BAD, BAD, BAD, |
igrokhotkov | 0:83f3dcfa5c8f | 42 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
igrokhotkov | 0:83f3dcfa5c8f | 43 | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, |
igrokhotkov | 0:83f3dcfa5c8f | 44 | 20, 21, 22, 23, 24, 25, |
igrokhotkov | 0:83f3dcfa5c8f | 45 | BAD, BAD, BAD, BAD, BAD, BAD, |
igrokhotkov | 0:83f3dcfa5c8f | 46 | 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, |
igrokhotkov | 0:83f3dcfa5c8f | 47 | 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, |
igrokhotkov | 0:83f3dcfa5c8f | 48 | 46, 47, 48, 49, 50, 51 |
igrokhotkov | 0:83f3dcfa5c8f | 49 | }; |
igrokhotkov | 0:83f3dcfa5c8f | 50 | |
igrokhotkov | 0:83f3dcfa5c8f | 51 | |
igrokhotkov | 0:83f3dcfa5c8f | 52 | int Base64_Decode(const byte* in, word32 inLen, byte* out, word32* outLen) |
igrokhotkov | 0:83f3dcfa5c8f | 53 | { |
igrokhotkov | 0:83f3dcfa5c8f | 54 | word32 i = 0; |
igrokhotkov | 0:83f3dcfa5c8f | 55 | word32 j = 0; |
igrokhotkov | 0:83f3dcfa5c8f | 56 | word32 plainSz = inLen - ((inLen + (PEM_LINE_SZ - 1)) / PEM_LINE_SZ ); |
igrokhotkov | 0:83f3dcfa5c8f | 57 | const byte maxIdx = (byte)sizeof(base64Decode) + 0x2B - 1; |
igrokhotkov | 0:83f3dcfa5c8f | 58 | |
igrokhotkov | 0:83f3dcfa5c8f | 59 | plainSz = (plainSz * 3 + 3) / 4; |
igrokhotkov | 0:83f3dcfa5c8f | 60 | if (plainSz > *outLen) return BAD_FUNC_ARG; |
igrokhotkov | 0:83f3dcfa5c8f | 61 | |
igrokhotkov | 0:83f3dcfa5c8f | 62 | while (inLen > 3) { |
igrokhotkov | 0:83f3dcfa5c8f | 63 | byte b1, b2, b3; |
igrokhotkov | 0:83f3dcfa5c8f | 64 | byte e1 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 65 | byte e2 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 66 | byte e3 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 67 | byte e4 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 68 | |
igrokhotkov | 0:83f3dcfa5c8f | 69 | int pad3 = 0; |
igrokhotkov | 0:83f3dcfa5c8f | 70 | int pad4 = 0; |
igrokhotkov | 0:83f3dcfa5c8f | 71 | |
igrokhotkov | 0:83f3dcfa5c8f | 72 | if (e1 == 0) /* end file 0's */ |
igrokhotkov | 0:83f3dcfa5c8f | 73 | break; |
igrokhotkov | 0:83f3dcfa5c8f | 74 | if (e3 == PAD) |
igrokhotkov | 0:83f3dcfa5c8f | 75 | pad3 = 1; |
igrokhotkov | 0:83f3dcfa5c8f | 76 | if (e4 == PAD) |
igrokhotkov | 0:83f3dcfa5c8f | 77 | pad4 = 1; |
igrokhotkov | 0:83f3dcfa5c8f | 78 | |
igrokhotkov | 0:83f3dcfa5c8f | 79 | if (e1 < 0x2B || e2 < 0x2B || e3 < 0x2B || e4 < 0x2B) { |
igrokhotkov | 0:83f3dcfa5c8f | 80 | // CYASSL_MSG("Bad Base64 Decode data, too small"); |
igrokhotkov | 0:83f3dcfa5c8f | 81 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 82 | } |
igrokhotkov | 0:83f3dcfa5c8f | 83 | |
igrokhotkov | 0:83f3dcfa5c8f | 84 | if (e1 > maxIdx || e2 > maxIdx || e3 > maxIdx || e4 > maxIdx) { |
igrokhotkov | 0:83f3dcfa5c8f | 85 | // CYASSL_MSG("Bad Base64 Decode data, too big"); |
igrokhotkov | 0:83f3dcfa5c8f | 86 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 87 | } |
igrokhotkov | 0:83f3dcfa5c8f | 88 | |
igrokhotkov | 0:83f3dcfa5c8f | 89 | e1 = base64Decode[e1 - 0x2B]; |
igrokhotkov | 0:83f3dcfa5c8f | 90 | e2 = base64Decode[e2 - 0x2B]; |
igrokhotkov | 0:83f3dcfa5c8f | 91 | e3 = (e3 == PAD) ? 0 : base64Decode[e3 - 0x2B]; |
igrokhotkov | 0:83f3dcfa5c8f | 92 | e4 = (e4 == PAD) ? 0 : base64Decode[e4 - 0x2B]; |
igrokhotkov | 0:83f3dcfa5c8f | 93 | |
igrokhotkov | 0:83f3dcfa5c8f | 94 | b1 = (e1 << 2) | (e2 >> 4); |
igrokhotkov | 0:83f3dcfa5c8f | 95 | b2 = ((e2 & 0xF) << 4) | (e3 >> 2); |
igrokhotkov | 0:83f3dcfa5c8f | 96 | b3 = ((e3 & 0x3) << 6) | e4; |
igrokhotkov | 0:83f3dcfa5c8f | 97 | |
igrokhotkov | 0:83f3dcfa5c8f | 98 | out[i++] = b1; |
igrokhotkov | 0:83f3dcfa5c8f | 99 | if (!pad3) |
igrokhotkov | 0:83f3dcfa5c8f | 100 | out[i++] = b2; |
igrokhotkov | 0:83f3dcfa5c8f | 101 | if (!pad4) |
igrokhotkov | 0:83f3dcfa5c8f | 102 | out[i++] = b3; |
igrokhotkov | 0:83f3dcfa5c8f | 103 | else |
igrokhotkov | 0:83f3dcfa5c8f | 104 | break; |
igrokhotkov | 0:83f3dcfa5c8f | 105 | |
igrokhotkov | 0:83f3dcfa5c8f | 106 | inLen -= 4; |
igrokhotkov | 0:83f3dcfa5c8f | 107 | if (in[j] == ' ' || in[j] == '\r' || in[j] == '\n') { |
igrokhotkov | 0:83f3dcfa5c8f | 108 | byte endLine = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 109 | inLen--; |
igrokhotkov | 0:83f3dcfa5c8f | 110 | while (endLine == ' ') { /* allow trailing whitespace */ |
igrokhotkov | 0:83f3dcfa5c8f | 111 | endLine = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 112 | inLen--; |
igrokhotkov | 0:83f3dcfa5c8f | 113 | } |
igrokhotkov | 0:83f3dcfa5c8f | 114 | if (endLine == '\r') { |
igrokhotkov | 0:83f3dcfa5c8f | 115 | endLine = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 116 | inLen--; |
igrokhotkov | 0:83f3dcfa5c8f | 117 | } |
igrokhotkov | 0:83f3dcfa5c8f | 118 | if (endLine != '\n') { |
igrokhotkov | 0:83f3dcfa5c8f | 119 | // CYASSL_MSG("Bad end of line in Base64 Decode"); |
igrokhotkov | 0:83f3dcfa5c8f | 120 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 121 | } |
igrokhotkov | 0:83f3dcfa5c8f | 122 | } |
igrokhotkov | 0:83f3dcfa5c8f | 123 | } |
igrokhotkov | 0:83f3dcfa5c8f | 124 | *outLen = i; |
igrokhotkov | 0:83f3dcfa5c8f | 125 | |
igrokhotkov | 0:83f3dcfa5c8f | 126 | return 0; |
igrokhotkov | 0:83f3dcfa5c8f | 127 | } |
igrokhotkov | 0:83f3dcfa5c8f | 128 | |
igrokhotkov | 0:83f3dcfa5c8f | 129 | |
igrokhotkov | 0:83f3dcfa5c8f | 130 | |
igrokhotkov | 0:83f3dcfa5c8f | 131 | static |
igrokhotkov | 0:83f3dcfa5c8f | 132 | const byte base64Encode[] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', |
igrokhotkov | 0:83f3dcfa5c8f | 133 | 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', |
igrokhotkov | 0:83f3dcfa5c8f | 134 | 'U', 'V', 'W', 'X', 'Y', 'Z', |
igrokhotkov | 0:83f3dcfa5c8f | 135 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', |
igrokhotkov | 0:83f3dcfa5c8f | 136 | 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', |
igrokhotkov | 0:83f3dcfa5c8f | 137 | 'u', 'v', 'w', 'x', 'y', 'z', |
igrokhotkov | 0:83f3dcfa5c8f | 138 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
igrokhotkov | 0:83f3dcfa5c8f | 139 | '+', '/' |
igrokhotkov | 0:83f3dcfa5c8f | 140 | }; |
igrokhotkov | 0:83f3dcfa5c8f | 141 | |
igrokhotkov | 0:83f3dcfa5c8f | 142 | |
igrokhotkov | 0:83f3dcfa5c8f | 143 | /* porting assistance from yaSSL by Raphael HUCK */ |
igrokhotkov | 0:83f3dcfa5c8f | 144 | int Base64_Encode(const byte* in, word32 inLen, byte* out, word32* outLen) |
igrokhotkov | 0:83f3dcfa5c8f | 145 | { |
igrokhotkov | 0:83f3dcfa5c8f | 146 | word32 i = 0, |
igrokhotkov | 0:83f3dcfa5c8f | 147 | j = 0, |
igrokhotkov | 0:83f3dcfa5c8f | 148 | n = 0; /* new line counter */ |
igrokhotkov | 0:83f3dcfa5c8f | 149 | |
igrokhotkov | 0:83f3dcfa5c8f | 150 | word32 outSz = (inLen + 3 - 1) / 3 * 4; |
igrokhotkov | 0:83f3dcfa5c8f | 151 | outSz += (outSz + PEM_LINE_SZ - 1) / PEM_LINE_SZ; /* new lines */ |
igrokhotkov | 0:83f3dcfa5c8f | 152 | |
igrokhotkov | 0:83f3dcfa5c8f | 153 | if (outSz > *outLen) return BAD_FUNC_ARG; |
igrokhotkov | 0:83f3dcfa5c8f | 154 | |
igrokhotkov | 0:83f3dcfa5c8f | 155 | while (inLen > 2) { |
igrokhotkov | 0:83f3dcfa5c8f | 156 | byte b1 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 157 | byte b2 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 158 | byte b3 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 159 | |
igrokhotkov | 0:83f3dcfa5c8f | 160 | /* encoded idx */ |
igrokhotkov | 0:83f3dcfa5c8f | 161 | byte e1 = b1 >> 2; |
igrokhotkov | 0:83f3dcfa5c8f | 162 | byte e2 = ((b1 & 0x3) << 4) | (b2 >> 4); |
igrokhotkov | 0:83f3dcfa5c8f | 163 | byte e3 = ((b2 & 0xF) << 2) | (b3 >> 6); |
igrokhotkov | 0:83f3dcfa5c8f | 164 | byte e4 = b3 & 0x3F; |
igrokhotkov | 0:83f3dcfa5c8f | 165 | |
igrokhotkov | 0:83f3dcfa5c8f | 166 | /* store */ |
igrokhotkov | 0:83f3dcfa5c8f | 167 | out[i++] = base64Encode[e1]; |
igrokhotkov | 0:83f3dcfa5c8f | 168 | out[i++] = base64Encode[e2]; |
igrokhotkov | 0:83f3dcfa5c8f | 169 | out[i++] = base64Encode[e3]; |
igrokhotkov | 0:83f3dcfa5c8f | 170 | out[i++] = base64Encode[e4]; |
igrokhotkov | 0:83f3dcfa5c8f | 171 | |
igrokhotkov | 0:83f3dcfa5c8f | 172 | inLen -= 3; |
igrokhotkov | 0:83f3dcfa5c8f | 173 | |
igrokhotkov | 0:83f3dcfa5c8f | 174 | if ((++n % (PEM_LINE_SZ / 4)) == 0 && inLen) |
igrokhotkov | 0:83f3dcfa5c8f | 175 | out[i++] = '\n'; |
igrokhotkov | 0:83f3dcfa5c8f | 176 | } |
igrokhotkov | 0:83f3dcfa5c8f | 177 | |
igrokhotkov | 0:83f3dcfa5c8f | 178 | /* last integral */ |
igrokhotkov | 0:83f3dcfa5c8f | 179 | if (inLen) { |
igrokhotkov | 0:83f3dcfa5c8f | 180 | int twoBytes = (inLen == 2); |
igrokhotkov | 0:83f3dcfa5c8f | 181 | |
igrokhotkov | 0:83f3dcfa5c8f | 182 | byte b1 = in[j++]; |
igrokhotkov | 0:83f3dcfa5c8f | 183 | byte b2 = (twoBytes) ? in[j++] : 0; |
igrokhotkov | 0:83f3dcfa5c8f | 184 | |
igrokhotkov | 0:83f3dcfa5c8f | 185 | byte e1 = b1 >> 2; |
igrokhotkov | 0:83f3dcfa5c8f | 186 | byte e2 = ((b1 & 0x3) << 4) | (b2 >> 4); |
igrokhotkov | 0:83f3dcfa5c8f | 187 | byte e3 = (b2 & 0xF) << 2; |
igrokhotkov | 0:83f3dcfa5c8f | 188 | |
igrokhotkov | 0:83f3dcfa5c8f | 189 | out[i++] = base64Encode[e1]; |
igrokhotkov | 0:83f3dcfa5c8f | 190 | out[i++] = base64Encode[e2]; |
igrokhotkov | 0:83f3dcfa5c8f | 191 | out[i++] = (twoBytes) ? base64Encode[e3] : PAD; |
igrokhotkov | 0:83f3dcfa5c8f | 192 | out[i++] = PAD; |
igrokhotkov | 0:83f3dcfa5c8f | 193 | } |
igrokhotkov | 0:83f3dcfa5c8f | 194 | |
igrokhotkov | 0:83f3dcfa5c8f | 195 | out[i++] = '\n'; |
igrokhotkov | 0:83f3dcfa5c8f | 196 | if (i != outSz) |
igrokhotkov | 0:83f3dcfa5c8f | 197 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 198 | *outLen = outSz; |
igrokhotkov | 0:83f3dcfa5c8f | 199 | |
igrokhotkov | 0:83f3dcfa5c8f | 200 | return 0; |
igrokhotkov | 0:83f3dcfa5c8f | 201 | } |
igrokhotkov | 0:83f3dcfa5c8f | 202 | |
igrokhotkov | 0:83f3dcfa5c8f | 203 | #if defined(OPENSSL_EXTRA) || defined (SESSION_CERTS) || defined(CYASSL_KEY_GEN) || defined(CYASSL_CERT_GEN) || defined(HAVE_WEBSERVER) |
igrokhotkov | 0:83f3dcfa5c8f | 204 | |
igrokhotkov | 0:83f3dcfa5c8f | 205 | static |
igrokhotkov | 0:83f3dcfa5c8f | 206 | const byte hexDecode[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
igrokhotkov | 0:83f3dcfa5c8f | 207 | BAD, BAD, BAD, BAD, BAD, BAD, BAD, |
igrokhotkov | 0:83f3dcfa5c8f | 208 | 10, 11, 12, 13, 14, 15 |
igrokhotkov | 0:83f3dcfa5c8f | 209 | }; /* A starts at 0x41 not 0x3A */ |
igrokhotkov | 0:83f3dcfa5c8f | 210 | |
igrokhotkov | 0:83f3dcfa5c8f | 211 | int Base16_Decode(const byte* in, word32 inLen, byte* out, word32* outLen) |
igrokhotkov | 0:83f3dcfa5c8f | 212 | { |
igrokhotkov | 0:83f3dcfa5c8f | 213 | word32 inIdx = 0; |
igrokhotkov | 0:83f3dcfa5c8f | 214 | word32 outIdx = 0; |
igrokhotkov | 0:83f3dcfa5c8f | 215 | |
igrokhotkov | 0:83f3dcfa5c8f | 216 | if (inLen == 1 && *outLen && in) { |
igrokhotkov | 0:83f3dcfa5c8f | 217 | byte b = in[inIdx++] - 0x30; /* 0 starts at 0x30 */ |
igrokhotkov | 0:83f3dcfa5c8f | 218 | |
igrokhotkov | 0:83f3dcfa5c8f | 219 | /* sanity check */ |
igrokhotkov | 0:83f3dcfa5c8f | 220 | if (b >= sizeof(hexDecode)/sizeof(hexDecode[0])) |
igrokhotkov | 0:83f3dcfa5c8f | 221 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 222 | |
igrokhotkov | 0:83f3dcfa5c8f | 223 | b = hexDecode[b]; |
igrokhotkov | 0:83f3dcfa5c8f | 224 | |
igrokhotkov | 0:83f3dcfa5c8f | 225 | if (b == BAD) |
igrokhotkov | 0:83f3dcfa5c8f | 226 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 227 | |
igrokhotkov | 0:83f3dcfa5c8f | 228 | out[outIdx++] = b; |
igrokhotkov | 0:83f3dcfa5c8f | 229 | |
igrokhotkov | 0:83f3dcfa5c8f | 230 | *outLen = outIdx; |
igrokhotkov | 0:83f3dcfa5c8f | 231 | return 0; |
igrokhotkov | 0:83f3dcfa5c8f | 232 | } |
igrokhotkov | 0:83f3dcfa5c8f | 233 | |
igrokhotkov | 0:83f3dcfa5c8f | 234 | if (inLen % 2) |
igrokhotkov | 0:83f3dcfa5c8f | 235 | return BAD_FUNC_ARG; |
igrokhotkov | 0:83f3dcfa5c8f | 236 | |
igrokhotkov | 0:83f3dcfa5c8f | 237 | if (*outLen < (inLen / 2)) |
igrokhotkov | 0:83f3dcfa5c8f | 238 | return BAD_FUNC_ARG; |
igrokhotkov | 0:83f3dcfa5c8f | 239 | |
igrokhotkov | 0:83f3dcfa5c8f | 240 | while (inLen) { |
igrokhotkov | 0:83f3dcfa5c8f | 241 | byte b = in[inIdx++] - 0x30; /* 0 starts at 0x30 */ |
igrokhotkov | 0:83f3dcfa5c8f | 242 | byte b2 = in[inIdx++] - 0x30; |
igrokhotkov | 0:83f3dcfa5c8f | 243 | |
igrokhotkov | 0:83f3dcfa5c8f | 244 | /* sanity checks */ |
igrokhotkov | 0:83f3dcfa5c8f | 245 | if (b >= sizeof(hexDecode)/sizeof(hexDecode[0])) |
igrokhotkov | 0:83f3dcfa5c8f | 246 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 247 | if (b2 >= sizeof(hexDecode)/sizeof(hexDecode[0])) |
igrokhotkov | 0:83f3dcfa5c8f | 248 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 249 | |
igrokhotkov | 0:83f3dcfa5c8f | 250 | b = hexDecode[b]; |
igrokhotkov | 0:83f3dcfa5c8f | 251 | b2 = hexDecode[b2]; |
igrokhotkov | 0:83f3dcfa5c8f | 252 | |
igrokhotkov | 0:83f3dcfa5c8f | 253 | if (b == BAD || b2 == BAD) |
igrokhotkov | 0:83f3dcfa5c8f | 254 | return ASN_INPUT_E; |
igrokhotkov | 0:83f3dcfa5c8f | 255 | |
igrokhotkov | 0:83f3dcfa5c8f | 256 | out[outIdx++] = (b << 4) | b2; |
igrokhotkov | 0:83f3dcfa5c8f | 257 | inLen -= 2; |
igrokhotkov | 0:83f3dcfa5c8f | 258 | } |
igrokhotkov | 0:83f3dcfa5c8f | 259 | |
igrokhotkov | 0:83f3dcfa5c8f | 260 | *outLen = outIdx; |
igrokhotkov | 0:83f3dcfa5c8f | 261 | return 0; |
igrokhotkov | 0:83f3dcfa5c8f | 262 | } |
igrokhotkov | 0:83f3dcfa5c8f | 263 | |
igrokhotkov | 0:83f3dcfa5c8f | 264 | |
igrokhotkov | 0:83f3dcfa5c8f | 265 | #endif /* defined(OPENSSL_EXTRA) || defined (SESSION_CERTS) || defined(CYASSL_KEY_GEN) || defined(CYASSL_CERT_GEN) || defined(HAVE_WEBSERVER) */ |